--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * ddbridge-mci.c: Digital Devices microcode interface
+ *
+ * Copyright (C) 2017 Digital Devices GmbH
+ * Ralph Metzler <rjkm@metzlerbros.de>
+ * Marcus Metzler <mocm@metzlerbros.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 only, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include "ddbridge.h"
+#include "ddbridge-io.h"
+#include "ddbridge-mci.h"
+
+static LIST_HEAD(mci_list);
+
+static const u32 MCLK = (1550000000 / 12);
+static const u32 MAX_DEMOD_LDPC_BITRATE = (1550000000 / 6);
+static const u32 MAX_LDPC_BITRATE = (720000000);
+
+struct mci_base {
+ struct list_head mci_list;
+ void *key;
+ struct ddb_link *link;
+ struct completion completion;
+
+ struct device *dev;
+ struct mutex tuner_lock; /* concurrent tuner access lock */
+ u8 adr;
+ struct mutex mci_lock; /* concurrent MCI access lock */
+ int count;
+
+ u8 tuner_use_count[4];
+ u8 assigned_demod[8];
+ u32 used_ldpc_bitrate[8];
+ u8 demod_in_use[8];
+ u32 iq_mode;
+};
+
+struct mci {
+ struct mci_base *base;
+ struct dvb_frontend fe;
+ int nr;
+ int demod;
+ int tuner;
+ int first_time_lock;
+ int started;
+ struct mci_result signal_info;
+
+ u32 bb_mode;
+};
+
+static int mci_reset(struct mci *state)
+{
+ struct ddb_link *link = state->base->link;
+ u32 status = 0;
+ u32 timeout = 40;
+
+ ddblwritel(link, MCI_CONTROL_RESET, MCI_CONTROL);
+ ddblwritel(link, 0, MCI_CONTROL + 4); /* 1= no internal init */
+ msleep(300);
+ ddblwritel(link, 0, MCI_CONTROL);
+
+ while (1) {
+ status = ddblreadl(link, MCI_CONTROL);
+ if ((status & MCI_CONTROL_READY) == MCI_CONTROL_READY)
+ break;
+ if (--timeout == 0)
+ break;
+ msleep(50);
+ }
+ if ((status & MCI_CONTROL_READY) == 0)
+ return -1;
+ if (link->ids.device == 0x0009)
+ ddblwritel(link, SX8_TSCONFIG_MODE_NORMAL, SX8_TSCONFIG);
+ return 0;
+}
+
+static int mci_config(struct mci *state, u32 config)
+{
+ struct ddb_link *link = state->base->link;
+
+ if (link->ids.device != 0x0009)
+ return -EINVAL;
+ ddblwritel(link, config, SX8_TSCONFIG);
+ return 0;
+}
+
+static int _mci_cmd_unlocked(struct mci *state,
+ u32 *cmd, u32 cmd_len,
+ u32 *res, u32 res_len)
+{
+ struct ddb_link *link = state->base->link;
+ u32 i, val;
+ unsigned long stat;
+
+ val = ddblreadl(link, MCI_CONTROL);
+ if (val & (MCI_CONTROL_RESET | MCI_CONTROL_START_COMMAND))
+ return -EIO;
+ if (cmd && cmd_len)
+ for (i = 0; i < cmd_len; i++)
+ ddblwritel(link, cmd[i], MCI_COMMAND + i * 4);
+ val |= (MCI_CONTROL_START_COMMAND | MCI_CONTROL_ENABLE_DONE_INTERRUPT);
+ ddblwritel(link, val, MCI_CONTROL);
+
+ stat = wait_for_completion_timeout(&state->base->completion, HZ);
+ if (stat == 0) {
+ dev_warn(state->base->dev, "MCI-%d: MCI timeout\n", state->nr);
+ return -EIO;
+ }
+ if (res && res_len)
+ for (i = 0; i < res_len; i++)
+ res[i] = ddblreadl(link, MCI_RESULT + i * 4);
+ return 0;
+}
+
+static int mci_cmd(struct mci *state,
+ struct mci_command *command,
+ struct mci_result *result)
+{
+ int stat;
+
+ mutex_lock(&state->base->mci_lock);
+ stat = _mci_cmd_unlocked(state,
+ (u32 *)command, sizeof(*command) / sizeof(u32),
+ (u32 *)result, sizeof(*result) / sizeof(u32));
+ mutex_unlock(&state->base->mci_lock);
+ return stat;
+}
+
+static void mci_handler(void *priv)
+{
+ struct mci_base *base = (struct mci_base *)priv;
+
+ complete(&base->completion);
+}
+
+static void release(struct dvb_frontend *fe)
+{
+ struct mci *state = fe->demodulator_priv;
+
+ state->base->count--;
+ if (state->base->count == 0) {
+ list_del(&state->base->mci_list);
+ kfree(state->base);
+ }
+ kfree(state);
+}
+
+static int read_status(struct dvb_frontend *fe, enum fe_status *status)
+{
+ int stat;
+ struct mci *state = fe->demodulator_priv;
+ struct mci_command cmd;
+ struct mci_result res;
+
+ cmd.command = MCI_CMD_GETSTATUS;
+ cmd.demod = state->demod;
+ stat = mci_cmd(state, &cmd, &res);
+ if (stat)
+ return stat;
+ *status = 0x00;
+ if (res.status == SX8_DEMOD_WAIT_MATYPE)
+ *status = 0x0f;
+ if (res.status == SX8_DEMOD_LOCKED)
+ *status = 0x1f;
+ return stat;
+}
+
+static int mci_set_tuner(struct dvb_frontend *fe, u32 tuner, u32 on)
+{
+ struct mci *state = fe->demodulator_priv;
+ struct mci_command cmd;
+
+ memset(&cmd, 0, sizeof(cmd));
+ cmd.tuner = state->tuner;
+ cmd.command = on ? SX8_CMD_INPUT_ENABLE : SX8_CMD_INPUT_DISABLE;
+ return mci_cmd(state, &cmd, NULL);
+}
+
+static int stop(struct dvb_frontend *fe)
+{
+ struct mci *state = fe->demodulator_priv;
+ struct mci_command cmd;
+ u32 input = state->tuner;
+
+ memset(&cmd, 0, sizeof(cmd));
+ if (state->demod != 0xff) {
+ cmd.command = MCI_CMD_STOP;
+ cmd.demod = state->demod;
+ mci_cmd(state, &cmd, NULL);
+ if (state->base->iq_mode) {
+ cmd.command = MCI_CMD_STOP;
+ cmd.demod = state->demod;
+ cmd.output = 0;
+ mci_cmd(state, &cmd, NULL);
+ mci_config(state, SX8_TSCONFIG_MODE_NORMAL);
+ }
+ }
+ mutex_lock(&state->base->tuner_lock);
+ state->base->tuner_use_count[input]--;
+ if (!state->base->tuner_use_count[input])
+ mci_set_tuner(fe, input, 0);
+ state->base->demod_in_use[state->demod] = 0;
+ state->base->used_ldpc_bitrate[state->nr] = 0;
+ state->demod = 0xff;
+ state->base->assigned_demod[state->nr] = 0xff;
+ state->base->iq_mode = 0;
+ mutex_unlock(&state->base->tuner_lock);
+ state->started = 0;
+ return 0;
+}
+
+static int start(struct dvb_frontend *fe, u32 flags, u32 modmask, u32 ts_config)
+{
+ struct mci *state = fe->demodulator_priv;
+ struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+ u32 used_ldpc_bitrate = 0, free_ldpc_bitrate;
+ u32 used_demods = 0;
+ struct mci_command cmd;
+ u32 input = state->tuner;
+ u32 bits_per_symbol = 0;
+ int i, stat = 0;
+
+ if (p->symbol_rate >= (MCLK / 2))
+ flags &= ~1;
+ if ((flags & 3) == 0)
+ return -EINVAL;
+
+ if (flags & 2) {
+ u32 tmp = modmask;
+
+ bits_per_symbol = 1;
+ while (tmp & 1) {
+ tmp >>= 1;
+ bits_per_symbol++;
+ }
+ }
+
+ mutex_lock(&state->base->tuner_lock);
+ if (state->base->iq_mode) {
+ stat = -EBUSY;
+ goto unlock;
+ }
+ for (i = 0; i < 8; i++) {
+ used_ldpc_bitrate += state->base->used_ldpc_bitrate[i];
+ if (state->base->demod_in_use[i])
+ used_demods++;
+ }
+ if (used_ldpc_bitrate >= MAX_LDPC_BITRATE ||
+ ((ts_config & SX8_TSCONFIG_MODE_MASK) >
+ SX8_TSCONFIG_MODE_NORMAL && used_demods > 0)) {
+ stat = -EBUSY;
+ goto unlock;
+ }
+ free_ldpc_bitrate = MAX_LDPC_BITRATE - used_ldpc_bitrate;
+ if (free_ldpc_bitrate > MAX_DEMOD_LDPC_BITRATE)
+ free_ldpc_bitrate = MAX_DEMOD_LDPC_BITRATE;
+
+ while (p->symbol_rate * bits_per_symbol > free_ldpc_bitrate)
+ bits_per_symbol--;
+
+ if (bits_per_symbol < 2) {
+ stat = -EBUSY;
+ goto unlock;
+ }
+ i = (p->symbol_rate > (MCLK / 2)) ? 3 : 7;
+ while (i >= 0 && state->base->demod_in_use[i])
+ i--;
+ if (i < 0) {
+ stat = -EBUSY;
+ goto unlock;
+ }
+ state->base->demod_in_use[i] = 1;
+ state->base->used_ldpc_bitrate[state->nr] = p->symbol_rate
+ * bits_per_symbol;
+ state->demod = i;
+ state->base->assigned_demod[state->nr] = i;
+
+ if (!state->base->tuner_use_count[input])
+ mci_set_tuner(fe, input, 1);
+ state->base->tuner_use_count[input]++;
+ state->base->iq_mode = (ts_config > 1);
+unlock:
+ mutex_unlock(&state->base->tuner_lock);
+ if (stat)
+ return stat;
+ memset(&cmd, 0, sizeof(cmd));
+
+ if (state->base->iq_mode) {
+ cmd.command = SX8_CMD_SELECT_IQOUT;
+ cmd.demod = state->demod;
+ cmd.output = 0;
+ mci_cmd(state, &cmd, NULL);
+ mci_config(state, ts_config);
+ }
+ if (p->stream_id != NO_STREAM_ID_FILTER && p->stream_id != 0x80000000)
+ flags |= 0x80;
+ dev_dbg(state->base->dev, "MCI-%d: tuner=%d demod=%d\n",
+ state->nr, state->tuner, state->demod);
+ cmd.command = MCI_CMD_SEARCH_DVBS;
+ cmd.dvbs2_search.flags = flags;
+ cmd.dvbs2_search.s2_modulation_mask =
+ modmask & ((1 << (bits_per_symbol - 1)) - 1);
+ cmd.dvbs2_search.retry = 2;
+ cmd.dvbs2_search.frequency = p->frequency * 1000;
+ cmd.dvbs2_search.symbol_rate = p->symbol_rate;
+ cmd.dvbs2_search.scrambling_sequence_index =
+ p->scrambling_sequence_index;
+ cmd.dvbs2_search.input_stream_id =
+ (p->stream_id != NO_STREAM_ID_FILTER) ? p->stream_id : 0;
+ cmd.tuner = state->tuner;
+ cmd.demod = state->demod;
+ cmd.output = state->nr;
+ if (p->stream_id == 0x80000000)
+ cmd.output |= 0x80;
+ stat = mci_cmd(state, &cmd, NULL);
+ if (stat)
+ stop(fe);
+ return stat;
+}
+
+static int start_iq(struct dvb_frontend *fe, u32 ts_config)
+{
+ struct mci *state = fe->demodulator_priv;
+ struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+ u32 used_demods = 0;
+ struct mci_command cmd;
+ u32 input = state->tuner;
+ int i, stat = 0;
+
+ mutex_lock(&state->base->tuner_lock);
+ if (state->base->iq_mode) {
+ stat = -EBUSY;
+ goto unlock;
+ }
+ for (i = 0; i < 8; i++)
+ if (state->base->demod_in_use[i])
+ used_demods++;
+ if (used_demods > 0) {
+ stat = -EBUSY;
+ goto unlock;
+ }
+ state->demod = 0;
+ state->base->assigned_demod[state->nr] = 0;
+ if (!state->base->tuner_use_count[input])
+ mci_set_tuner(fe, input, 1);
+ state->base->tuner_use_count[input]++;
+ state->base->iq_mode = (ts_config > 1);
+unlock:
+ mutex_unlock(&state->base->tuner_lock);
+ if (stat)
+ return stat;
+
+ memset(&cmd, 0, sizeof(cmd));
+ cmd.command = SX8_CMD_START_IQ;
+ cmd.dvbs2_search.frequency = p->frequency * 1000;
+ cmd.dvbs2_search.symbol_rate = p->symbol_rate;
+ cmd.tuner = state->tuner;
+ cmd.demod = state->demod;
+ cmd.output = 7;
+ mci_config(state, ts_config);
+ stat = mci_cmd(state, &cmd, NULL);
+ if (stat)
+ stop(fe);
+ return stat;
+}
+
+static int set_parameters(struct dvb_frontend *fe)
+{
+ int stat = 0;
+ struct mci *state = fe->demodulator_priv;
+ struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+ u32 ts_config, iq_mode = 0, isi;
+
+ if (state->started)
+ stop(fe);
+
+ isi = p->stream_id;
+ if (isi != NO_STREAM_ID_FILTER)
+ iq_mode = (isi & 0x30000000) >> 28;
+
+ switch (iq_mode) {
+ case 1:
+ ts_config = (SX8_TSCONFIG_TSHEADER | SX8_TSCONFIG_MODE_IQ);
+ break;
+ case 2:
+ ts_config = (SX8_TSCONFIG_TSHEADER | SX8_TSCONFIG_MODE_IQ);
+ break;
+ default:
+ ts_config = SX8_TSCONFIG_MODE_NORMAL;
+ break;
+ }
+
+ if (iq_mode != 2) {
+ u32 flags = 3;
+ u32 mask = 3;
+
+ if (p->modulation == APSK_16 ||
+ p->modulation == APSK_32) {
+ flags = 2;
+ mask = 15;
+ }
+ stat = start(fe, flags, mask, ts_config);
+ } else {
+ stat = start_iq(fe, ts_config);
+ }
+
+ if (!stat) {
+ state->started = 1;
+ state->first_time_lock = 1;
+ state->signal_info.status = SX8_DEMOD_WAIT_SIGNAL;
+ }
+
+ return stat;
+}
+
+static int tune(struct dvb_frontend *fe, bool re_tune,
+ unsigned int mode_flags,
+ unsigned int *delay, enum fe_status *status)
+{
+ int r;
+
+ if (re_tune) {
+ r = set_parameters(fe);
+ if (r)
+ return r;
+ }
+ r = read_status(fe, status);
+ if (r)
+ return r;
+
+ if (*status & FE_HAS_LOCK)
+ return 0;
+ *delay = HZ / 10;
+ return 0;
+}
+
+static int get_algo(struct dvb_frontend *fe)
+{
+ return DVBFE_ALGO_HW;
+}
+
+static int set_input(struct dvb_frontend *fe, int input)
+{
+ struct mci *state = fe->demodulator_priv;
+
+ state->tuner = input;
+ dev_dbg(state->base->dev, "MCI-%d: input=%d\n", state->nr, input);
+ return 0;
+}
+
+static struct dvb_frontend_ops mci_ops = {
+ .delsys = { SYS_DVBS, SYS_DVBS2 },
+ .info = {
+ .name = "Digital Devices MaxSX8 MCI DVB-S/S2/S2X",
+ .frequency_min = 950000,
+ .frequency_max = 2150000,
+ .frequency_stepsize = 0,
+ .frequency_tolerance = 0,
+ .symbol_rate_min = 100000,
+ .symbol_rate_max = 100000000,
+ .caps = FE_CAN_INVERSION_AUTO |
+ FE_CAN_FEC_AUTO |
+ FE_CAN_QPSK |
+ FE_CAN_2G_MODULATION |
+ FE_CAN_MULTISTREAM,
+ },
+ .get_frontend_algo = get_algo,
+ .tune = tune,
+ .release = release,
+ .read_status = read_status,
+};
+
+static struct mci_base *match_base(void *key)
+{
+ struct mci_base *p;
+
+ list_for_each_entry(p, &mci_list, mci_list)
+ if (p->key == key)
+ return p;
+ return NULL;
+}
+
+static int probe(struct mci *state)
+{
+ mci_reset(state);
+ return 0;
+}
+
+struct dvb_frontend
+*ddb_mci_attach(struct ddb_input *input,
+ int mci_type, int nr,
+ int (**fn_set_input)(struct dvb_frontend *, int))
+{
+ struct ddb_port *port = input->port;
+ struct ddb *dev = port->dev;
+ struct ddb_link *link = &dev->link[port->lnr];
+ struct mci_base *base;
+ struct mci *state;
+ void *key = mci_type ? (void *)port : (void *)link;
+
+ state = kzalloc(sizeof(*state), GFP_KERNEL);
+ if (!state)
+ return NULL;
+
+ base = match_base(key);
+ if (base) {
+ base->count++;
+ state->base = base;
+ } else {
+ base = kzalloc(sizeof(*base), GFP_KERNEL);
+ if (!base)
+ goto fail;
+ base->key = key;
+ base->count = 1;
+ base->link = link;
+ base->dev = dev->dev;
+ mutex_init(&base->mci_lock);
+ mutex_init(&base->tuner_lock);
+ ddb_irq_set(dev, link->nr, 0, mci_handler, base);
+ init_completion(&base->completion);
+ state->base = base;
+ if (probe(state) < 0) {
+ kfree(base);
+ goto fail;
+ }
+ list_add(&base->mci_list, &mci_list);
+ }
+ state->fe.ops = mci_ops;
+ state->fe.demodulator_priv = state;
+ state->nr = nr;
+ *fn_set_input = set_input;
+
+ state->tuner = nr;
+ state->demod = nr;
+
+ return &state->fe;
+fail:
+ kfree(state);
+ return NULL;
+}
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * ddbridge-mci.h: Digital Devices micro code interface
+ *
+ * Copyright (C) 2017 Digital Devices GmbH
+ * Marcus Metzler <mocm@metzlerbros.de>
+ * Ralph Metzler <rjkm@metzlerbros.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 only, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _DDBRIDGE_MCI_H_
+#define _DDBRIDGE_MCI_H_
+
+#define MCI_CONTROL (0x500)
+#define MCI_COMMAND (0x600)
+#define MCI_RESULT (0x680)
+
+#define MCI_COMMAND_SIZE (0x80)
+#define MCI_RESULT_SIZE (0x80)
+
+#define MCI_CONTROL_START_COMMAND (0x00000001)
+#define MCI_CONTROL_ENABLE_DONE_INTERRUPT (0x00000002)
+#define MCI_CONTROL_RESET (0x00008000)
+#define MCI_CONTROL_READY (0x00010000)
+
+#define SX8_TSCONFIG (0x280)
+
+#define SX8_TSCONFIG_MODE_MASK (0x00000003)
+#define SX8_TSCONFIG_MODE_OFF (0x00000000)
+#define SX8_TSCONFIG_MODE_NORMAL (0x00000001)
+#define SX8_TSCONFIG_MODE_IQ (0x00000003)
+
+#define SX8_TSCONFIG_TSHEADER (0x00000004)
+#define SX8_TSCONFIG_BURST (0x00000008)
+
+#define SX8_TSCONFIG_BURSTSIZE_MASK (0x00000030)
+#define SX8_TSCONFIG_BURSTSIZE_2K (0x00000000)
+#define SX8_TSCONFIG_BURSTSIZE_4K (0x00000010)
+#define SX8_TSCONFIG_BURSTSIZE_8K (0x00000020)
+#define SX8_TSCONFIG_BURSTSIZE_16K (0x00000030)
+
+#define SX8_DEMOD_STOPPED (0)
+#define SX8_DEMOD_IQ_MODE (1)
+#define SX8_DEMOD_WAIT_SIGNAL (2)
+#define SX8_DEMOD_WAIT_MATYPE (3)
+#define SX8_DEMOD_TIMEOUT (14)
+#define SX8_DEMOD_LOCKED (15)
+
+#define MCI_CMD_STOP (0x01)
+#define MCI_CMD_GETSTATUS (0x02)
+#define MCI_CMD_GETSIGNALINFO (0x03)
+#define MCI_CMD_RFPOWER (0x04)
+
+#define MCI_CMD_SEARCH_DVBS (0x10)
+
+#define MCI_CMD_GET_IQSYMBOL (0x30)
+
+#define SX8_CMD_INPUT_ENABLE (0x40)
+#define SX8_CMD_INPUT_DISABLE (0x41)
+#define SX8_CMD_START_IQ (0x42)
+#define SX8_CMD_STOP_IQ (0x43)
+#define SX8_CMD_SELECT_IQOUT (0x44)
+#define SX8_CMD_SELECT_TSOUT (0x45)
+
+#define SX8_ERROR_UNSUPPORTED (0x80)
+
+#define SX8_SUCCESS(status) (status < SX8_ERROR_UNSUPPORTED)
+
+#define SX8_CMD_DIAG_READ8 (0xE0)
+#define SX8_CMD_DIAG_READ32 (0xE1)
+#define SX8_CMD_DIAG_WRITE8 (0xE2)
+#define SX8_CMD_DIAG_WRITE32 (0xE3)
+
+#define SX8_CMD_DIAG_READRF (0xE8)
+#define SX8_CMD_DIAG_WRITERF (0xE9)
+
+struct mci_command {
+ union {
+ u32 command_word;
+ struct {
+ u8 command;
+ u8 tuner;
+ u8 demod;
+ u8 output;
+ };
+ };
+ union {
+ u32 params[31];
+ struct {
+ u8 flags;
+ u8 s2_modulation_mask;
+ u8 rsvd1;
+ u8 retry;
+ u32 frequency;
+ u32 symbol_rate;
+ u8 input_stream_id;
+ u8 rsvd2[3];
+ u32 scrambling_sequence_index;
+ } dvbs2_search;
+ };
+};
+
+struct mci_result {
+ union {
+ u32 status_word;
+ struct {
+ u8 status;
+ u8 rsvd;
+ u16 time;
+ };
+ };
+ union {
+ u32 result[27];
+ struct {
+ u8 standard;
+ /* puncture rate for DVB-S */
+ u8 pls_code;
+ /* 7-6: rolloff, 5-2: rsrvd, 1:short, 0:pilots */
+ u8 roll_off;
+ u8 rsvd;
+ u32 frequency;
+ u32 symbol_rate;
+ s16 channel_power;
+ s16 band_power;
+ s16 signal_to_noise;
+ s16 rsvd2;
+ u32 packet_errors;
+ u32 ber_numerator;
+ u32 ber_denominator;
+ } dvbs2_signal_info;
+ struct {
+ u8 i_symbol;
+ u8 q_symbol;
+ } dvbs2_signal_iq;
+ };
+ u32 version[4];
+};
+
+struct dvb_frontend
+*ddb_mci_attach(struct ddb_input *input,
+ int mci_type, int nr,
+ int (**fn_set_input)(struct dvb_frontend *, int));
+
+#endif /* _DDBRIDGE_MCI_H_ */
projects / linux.git / commitdiff